What do you want to tell us ?
The correct rear Michelin Commander 2 tire size for the 1700 will be 180 / 65 / R16
Have them on mine together with the front Commander 2 tire and in my opinion one of the best tires.
Some people love them, some hate them, especially in the rain, but all depends on the rider, the feeling, the asphalt/tarmarq mixture and personal riding skills.
What am I trying to share? That when it comes to non-spec'd tires, for our bikes, it's caveat emptor/buyer beware, especially with Michelin.
Scrape the 'net and there's more than a few riders with front end shake when running a CII up front. Does my bike track and handle well with these shoes? Sure does, until I release the grip on my handlebars. That's disquieting and my situation is not unique.
Michelin makes it very clear that they DO NOT market a tire for our bikes in any way shape or form. The link to the fitment guide confirms that.
Have my CII's performed well when solely looking at wear/mileage? Yes. Is head shake normal behaviour? NO.
I'm only trying to be helpful because there's more than one rider out there dropping money on head bearing replacement when they get the shake. Spending money chasing demons.
By all means, the CII is a good wearing tire. Just be prepared for shake and Michelin saying "not our problem". In a personal email to me Michelin Corporate stated that "the tire did not perform well during testing on this motorcycle, as such it is not listed in our fitment guide".
My Voyager was fantastic with a CII on the back and stock on the front. Set the cruise and take both hands off the bars and the bike was rock solid. Any speed. You don't want to do the same with a CII on the front. It'll wake anyone up real quick. And if it's going to shake in this situation, what other time may the bike go a little nuts? That's what's in the back of my mind. My front CII is gone the second I replace the rear, I've got about 5000km to go.